I have SIJ dysfunction & instability since having my baby 2 years ago. I’m in pain pretty much all the time now, despite PT. Since I spend a fair amount of time at my sewing machine, I was having a lot of SI joint pain and middle back pain as a result. I’ve since started using the BackJoy for sewing and it has actually made a big difference! It doesn’t prevent 100% of my pain, but it has dramatically improved, so I’m happy with that. My only complaint, and I wouldn’t even really call it a complaint, is that it is a bit of a hassle to have to readjust every time I get up and sit back down. I’d like if there was some way to brace it on the chair so that I could just sit down and not fiddle with it, but I think that would interfere with the function. I’ll suck it up, it sure beats being in pain! ..More